/Engine/Source/Runtime/Engine/Public/Animation/AnimInstanceProxy.h
Get whether a particular notify state is active in a specific state machine last tick.
bool WasAnimNotifyStateActiveInStateMachine ( int32 MachineIndex, [TSubclassOf](API\Runtime\CoreUObject\Templates\TSubclassOf)< [UAnimNotifyState](API\Runtime\Engine\Animation\AnimNotifies\UAnimNotifyState) > AnimNotifyStateType ) const